    <div class="mobile_menu">
        <nav class="navbar navbar-expand-lg navbar-light bg-light">
            <div class="logo_mobile"><a href="index.html"><img src="images/logo.png" style="width: 75px"></a></div>
            <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
                <span class="navbar-toggler-icon"></span>
            </button>
        </nav>
    </div>
    <div class="container">
        <div class="logo"><a href="index.html"><img src="images/logo.png" style="height: 80px" title="软盛科技"></a></div>
    </div>
